Patents by Inventor Jarl-Erik Jofs

Jarl-Erik Jofs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of fabricating composite products
    Patent number: 4729807
    Abstract: The invention provides a method of forming composite products of two incompatible plastics or other materials by extruding a first stream of plastic through a die to form a profile and coextruding another stream on the surface thereof which is fusible with the first plastic and is impregnated with foreign matter and causing, by means of high heat, pressure drop or shear stress, a rupture of the layer to form a pattern of irregular cavities and projections to which a coating can be applied which will invade the cavities and surround the projections to bond with the extruded profile.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: March 8, 1988
    Assignee: Oy Wiik & Hoglund AB
    Inventors: Hans Hede, Gunnar Blomqvist, Jarl-Erik Jofs
  • Non-slip plastic film
    Patent number: 4488918
    Abstract: This invention discloses a plastic film having a non-slip surface comprising spaced random patterns of rigid peaks and ridges formed by a second thermo-plastic layer coextruded with and bonded to the plastic film and rupturing the second layer during expansion.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: December 18, 1984
    Assignee: Oy Wiik & Hoglund AB
    Inventor: Jarl-Erik Jofs
  • Sheet of plastic material
    Patent number: D269727
    Type: Grant
    Filed: December 11, 1980
    Date of Patent: July 12, 1983
    Assignee: Oy Wiik & Hoglund Ab
    Inventor: Jarl-Erik Jofs